<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1, user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge,chrome=1">
    <meta name="author" content="陈嘉乐">
    <title></title>
    <style>
*{
    box-sizing: border-box;
}
.container{
    width: 700px;
    margin: 0 auto;
}
li{
    display: inline-block;
    list-style: none;
    
}
.container img{
    opacity: 0.5;
}
.container li img:hover{
    opacity: 1;
    cursor: crosshair;
}
</style>
</head>
<body>
    <div >
        <ul class="container">
            <li>
                <img src="1.jpg" alt="">
                <!-- <div class="first"></div> -->
            </li>
            <li>
                <img src="2.jpg" alt="">
            </li>
            <li>
                <img src="3.jpg" alt="">
            </li>
            <li>
                <img src="4.jpg" alt="">
            </li>
            <li>
                <img src="5.jpg" alt="">
            </li>
            <li>
                <img src="6.jpg" alt="">
            </li>
            <li>
                <img src="7.jpg" alt="">
            </li>
            <li>
                <img src="8.jpg" alt="">
            </li>
            <li>
                <img src="9.jpg" alt="">
            </li>
            <li>
                <img src="10.jpg" alt="">
            </li>
        </ul>
    </div>

</body>
</html>
<script>




</script>